The linear dimensional changes of three commercial periodontal dressings were measured during 24 hours. The dressings revealed different degrees of dimensional changes, which may indicate that exhibit variations in adaptation to wound surfaces.
Polyethylene tubes filled with various dental materials were placed as subcutaneous implants in rats. A scoring system for no, slight, moderate and severe reaction was established on the basis of the tissue response to a variety of materials for the evaluation of long term implants (30 or 90 days). Short term implants (7 or 14 days) were evaluated by deciding whether or not an effect from the material could be found in addition to the operative trauma.
The scoring system was used to evaluate the reactions to three periodontal dressings. Tissue from the short term implantation periods exhibited marked reactions to most implants. Long term implantation revealed that a difference in the tissue response to the three dressings was present, For two of the materials the initial irritation was followed by an innocuous state, but from the third dressing a continuous irritation of the tissue was observed.
The adhesive properties of three periodontal dressing materials to hard and soft tissues were studied in vitro. The results indicated that adhesion occurred between the tissues and two of the materials. The third material did not adhere to any of the surfaces tested. Only small adhesive forces were recorded, but they may be of importance in establishing a tight seal between the dressings and the tissues.
Sensitive teeth after periodontal treatment are a rather common finding. Therefore, it has been questioned whether all the cementum on the root surfaces ought to be removed during periodontal therapy, since the sensitivity is caused by exposure of the dentin. Usually, the hypersensitivity represents a minor problem and will decrease or disappear with time. However, the following case demonstrates that repeated instrumentation of periodontally involved teeth can lead to an extreme degree of hypersensitivity.
Most commercial periodontal dressings claiming antibacterial activity lose this activity shortly after application. Chlorhexidine (CH) is an antibacterial agent with long-term activity in the oral cavity owing to its substantiveness and slow-release properties. In a double-blind split-mouth-designed clinical trial the effect of incorporating CH acetate in periodontal dressing was tested on wound healing after gingivectomy. Eleven patients, each needing at least two gingivectomies, constituted the test panel. Wound healing, as assessed by bleeding tendency after removal of dressing 7 days postoperatively was significantly delayed when control dressings were applied as compared with test dressings. Variables with regard to patient comfort also yielded results in favor of the test pack. Incorporation of antibacterial agents with high retention and slow release properties in the mouth in surgical dressings seems advantageous.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.